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Chemistry (Forces (Forces can change (Speed, Direction of movement, Shape)…
Chemistry
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Elements
periodic table
Metallic elements on the left, Non-metallics on the right.
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Atoms
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They have an electron, neutron, proton and a nucleus
Reactions
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Physical changes such as state change and dissolving are reversible, and there is no change in total mass when they happen. Flowing and diffusion happens in liquids and gases, but not in solids.
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